ia64/xen-unstable

changeset 13468:8bfc6e85eeba

[IA64] Move asm/percpu.h to linux-xen

Modified by upcoming lazy FP save/restore code

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
author awilliam@xenbuild2.aw
date Tue Jan 23 09:45:26 2007 -0700 (2007-01-23)
parents 9576f09c9eff
children d12ea0bfecce
files xen/include/asm-ia64/linux-xen/asm/README.origin xen/include/asm-ia64/linux-xen/asm/percpu.h xen/include/asm-ia64/linux/asm/README.origin xen/include/asm-ia64/linux/asm/percpu.h
line diff
     1.1 --- a/xen/include/asm-ia64/linux-xen/asm/README.origin	Tue Jan 23 09:08:03 2007 -0700
     1.2 +++ b/xen/include/asm-ia64/linux-xen/asm/README.origin	Tue Jan 23 09:45:26 2007 -0700
     1.3 @@ -18,6 +18,7 @@ meminit.h		-> linux/include/asm-ia64/mem
     1.4  numa.h			-> linux/include/asm-ia64/numa.h
     1.5  page.h			-> linux/include/asm-ia64/page.h
     1.6  pal.h			-> linux/include/asm-ia64/pal.h
     1.7 +percpu.h		-> linux/include/asm-ia64/percpu.h
     1.8  pgalloc.h		-> linux/include/asm-ia64/pgalloc.h
     1.9  pgtable.h		-> linux/include/asm-ia64/pgtable.h
    1.10  processor.h		-> linux/include/asm-ia64/processor.h
     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/xen/include/asm-ia64/linux-xen/asm/percpu.h	Tue Jan 23 09:45:26 2007 -0700
     2.3 @@ -0,0 +1,72 @@
     2.4 +#ifndef _ASM_IA64_PERCPU_H
     2.5 +#define _ASM_IA64_PERCPU_H
     2.6 +
     2.7 +/*
     2.8 + * Copyright (C) 2002-2003 Hewlett-Packard Co
     2.9 + *	David Mosberger-Tang <davidm@hpl.hp.com>
    2.10 + */
    2.11 +
    2.12 +#define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE
    2.13 +
    2.14 +#ifdef __ASSEMBLY__
    2.15 +# define THIS_CPU(var)	(per_cpu__##var)  /* use this to mark accesses to per-CPU variables... */
    2.16 +#else /* !__ASSEMBLY__ */
    2.17 +
    2.18 +#include <linux/config.h>
    2.19 +
    2.20 +#include <linux/threads.h>
    2.21 +
    2.22 +#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
    2.23 +# define __SMALL_ADDR_AREA	__attribute__((__model__ (__small__)))
    2.24 +#else
    2.25 +# define __SMALL_ADDR_AREA
    2.26 +#endif
    2.27 +
    2.28 +#define DECLARE_PER_CPU(type, name)				\
    2.29 +	extern __SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
    2.30 +
    2.31 +/* Separate out the type, so (int[3], foo) works. */
    2.32 +#define DEFINE_PER_CPU(type, name)				\
    2.33 +	__attribute__((__section__(".data.percpu")))		\
    2.34 +	__SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
    2.35 +
    2.36 +/*
    2.37 + * Pretty much a literal copy of asm-generic/percpu.h, except that percpu_modcopy() is an
    2.38 + * external routine, to avoid include-hell.
    2.39 + */
    2.40 +#ifdef CONFIG_SMP
    2.41 +
    2.42 +extern unsigned long __per_cpu_offset[NR_CPUS];
    2.43 +
    2.44 +/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
    2.45 +DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
    2.46 +
    2.47 +#define per_cpu(var, cpu)  (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
    2.48 +#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset)))
    2.49 +
    2.50 +extern void percpu_modcopy(void *pcpudst, const void *src, unsigned long size);
    2.51 +extern void setup_per_cpu_areas (void);
    2.52 +extern void *per_cpu_init(void);
    2.53 +
    2.54 +#else /* ! SMP */
    2.55 +
    2.56 +#define per_cpu(var, cpu)			(*((void)(cpu), &per_cpu__##var))
    2.57 +#define __get_cpu_var(var)			per_cpu__##var
    2.58 +#define per_cpu_init()				(__phys_per_cpu_start)
    2.59 +
    2.60 +#endif	/* SMP */
    2.61 +
    2.62 +#define EXPORT_PER_CPU_SYMBOL(var)		EXPORT_SYMBOL(per_cpu__##var)
    2.63 +#define EXPORT_PER_CPU_SYMBOL_GPL(var)		EXPORT_SYMBOL_GPL(per_cpu__##var)
    2.64 +
    2.65 +/*
    2.66 + * Be extremely careful when taking the address of this variable!  Due to virtual
    2.67 + * remapping, it is different from the canonical address returned by __get_cpu_var(var)!
    2.68 + * On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly
    2.69 + * more efficient.
    2.70 + */
    2.71 +#define __ia64_per_cpu_var(var)	(per_cpu__##var)
    2.72 +
    2.73 +#endif /* !__ASSEMBLY__ */
    2.74 +
    2.75 +#endif /* _ASM_IA64_PERCPU_H */
     3.1 --- a/xen/include/asm-ia64/linux/asm/README.origin	Tue Jan 23 09:08:03 2007 -0700
     3.2 +++ b/xen/include/asm-ia64/linux/asm/README.origin	Tue Jan 23 09:45:26 2007 -0700
     3.3 @@ -28,7 +28,6 @@ numnodes.h		-> linux/include/asm-ia64/nu
     3.4  param.h			-> linux/include/asm-ia64/param.h
     3.5  patch.h			-> linux/include/asm-ia64/patch.h
     3.6  pci.h			-> linux/include/asm-ia64/pci.h
     3.7 -percpu.h		-> linux/include/asm-ia64/percpu.h
     3.8  rse.h			-> linux/include/asm-ia64/rse.h
     3.9  sal.h			-> linux/include/asm-ia64/sal.h
    3.10  sections.h		-> linux/include/asm-ia64/sections.h
     4.1 --- a/xen/include/asm-ia64/linux/asm/percpu.h	Tue Jan 23 09:08:03 2007 -0700
     4.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     4.3 @@ -1,72 +0,0 @@
     4.4 -#ifndef _ASM_IA64_PERCPU_H
     4.5 -#define _ASM_IA64_PERCPU_H
     4.6 -
     4.7 -/*
     4.8 - * Copyright (C) 2002-2003 Hewlett-Packard Co
     4.9 - *	David Mosberger-Tang <davidm@hpl.hp.com>
    4.10 - */
    4.11 -
    4.12 -#define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE
    4.13 -
    4.14 -#ifdef __ASSEMBLY__
    4.15 -# define THIS_CPU(var)	(per_cpu__##var)  /* use this to mark accesses to per-CPU variables... */
    4.16 -#else /* !__ASSEMBLY__ */
    4.17 -
    4.18 -#include <linux/config.h>
    4.19 -
    4.20 -#include <linux/threads.h>
    4.21 -
    4.22 -#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
    4.23 -# define __SMALL_ADDR_AREA	__attribute__((__model__ (__small__)))
    4.24 -#else
    4.25 -# define __SMALL_ADDR_AREA
    4.26 -#endif
    4.27 -
    4.28 -#define DECLARE_PER_CPU(type, name)				\
    4.29 -	extern __SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
    4.30 -
    4.31 -/* Separate out the type, so (int[3], foo) works. */
    4.32 -#define DEFINE_PER_CPU(type, name)				\
    4.33 -	__attribute__((__section__(".data.percpu")))		\
    4.34 -	__SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
    4.35 -
    4.36 -/*
    4.37 - * Pretty much a literal copy of asm-generic/percpu.h, except that percpu_modcopy() is an
    4.38 - * external routine, to avoid include-hell.
    4.39 - */
    4.40 -#ifdef CONFIG_SMP
    4.41 -
    4.42 -extern unsigned long __per_cpu_offset[NR_CPUS];
    4.43 -
    4.44 -/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
    4.45 -DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
    4.46 -
    4.47 -#define per_cpu(var, cpu)  (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
    4.48 -#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset)))
    4.49 -
    4.50 -extern void percpu_modcopy(void *pcpudst, const void *src, unsigned long size);
    4.51 -extern void setup_per_cpu_areas (void);
    4.52 -extern void *per_cpu_init(void);
    4.53 -
    4.54 -#else /* ! SMP */
    4.55 -
    4.56 -#define per_cpu(var, cpu)			(*((void)(cpu), &per_cpu__##var))
    4.57 -#define __get_cpu_var(var)			per_cpu__##var
    4.58 -#define per_cpu_init()				(__phys_per_cpu_start)
    4.59 -
    4.60 -#endif	/* SMP */
    4.61 -
    4.62 -#define EXPORT_PER_CPU_SYMBOL(var)		EXPORT_SYMBOL(per_cpu__##var)
    4.63 -#define EXPORT_PER_CPU_SYMBOL_GPL(var)		EXPORT_SYMBOL_GPL(per_cpu__##var)
    4.64 -
    4.65 -/*
    4.66 - * Be extremely careful when taking the address of this variable!  Due to virtual
    4.67 - * remapping, it is different from the canonical address returned by __get_cpu_var(var)!
    4.68 - * On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly
    4.69 - * more efficient.
    4.70 - */
    4.71 -#define __ia64_per_cpu_var(var)	(per_cpu__##var)
    4.72 -
    4.73 -#endif /* !__ASSEMBLY__ */
    4.74 -
    4.75 -#endif /* _ASM_IA64_PERCPU_H */